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发明名称
Schaltungsanordnung fuer Anrufsucher an Anschlussleitungen ohne Linienrelais mit einem mehreren Anschlussleitungen gemeinsamen Anlassrelais
摘要
申请公布号
DE707489(C)
申请公布日期
1941.06.24
申请号
DE1938S133363D
申请日期
1938.08.11
申请人
SIEMENS & HALSKE AKT.-GES.
发明人
DREYER HANS
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
主权项
地址
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